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Dayang Chem (Hangzhou) Co.,Ltd.

DayangChem exported this product to many countries and regions at best price. If you are looking for the material's manufacturer or supplier in China, DayangChem is your best choice. Pls contact with us freely for getting detailed product spe

Simagchem Corporation

Welcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our

High quality Levofloxacin Carboxylic Acid, Ethyl Ester supplier in China

Cas:106939-34-8

Min.Order:0 Metric Ton

Negotiable

Type:Manufacturers

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Ality Chemical Corporation

The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi

Xi'an Xszo Chem Co., Ltd.

1. Factory price and high quality must be guaranteed, base on 8 years of production and R&D experience2. Free samples will be provided,ensure specifications and quality are right for customer3. Customers will receive the most professional technical s

Large Stock 99.0% LEVOFLOXACIN ACID ESTER 106939-34-8 Producer

Cas:106939-34-8

Min.Order:1 Gram

FOB Price: $0.1

Type:Manufacturers

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Chemwill Asia Co., Ltd.

Our main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block

9,10-Difluoro-2,3-dihydro-3(S)-methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid ethyl ester

Cas:106939-34-8

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

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Henan Tianfu Chemical Co., Ltd.

High Quality Ethyl (S)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylate Basic information Product Name: Ethyl (S)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido

Ethyl (S)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylate

Cas:106939-34-8

Min.Order:1 Metric Ton

Negotiable

Type:Lab/Research institutions

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Hebei Nengqian Chemical Import and Export Co., LTD

Our advantages: 1. All inquiries will be replied within 12 hours. 2. Dedication to quality, supply & service. 3. Strictly on selecting raw materials. 4. Reasonable & competitive price, fast lead time. 5. Sample is available for your eva

Ethyl (S)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylate

Cas:106939-34-8

Min.Order:1 Kilogram

FOB Price: $9.0 / 99.0

Type:Trading Company

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Zhuozhou Wenxi import and Export Co., Ltd

WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

Best CAS 106939-34-8 with high-quality service

Cas:106939-34-8

Min.Order:10 Gram

FOB Price: $146.0 / 176.0

Type:Trading Company

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Henan Sinotech Import&Export Corporation

Product Name: difluorocarboylic acid este Synonyms: LEVOFLOXACIN ACID ESTER CAS: 106939-34-8 MF: C15H13F2NO4 Appearance:Colorless clear liquid Storage:Preserve in well-closed, light-resistant

difluorocarboylic acid este

Cas:106939-34-8

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Other

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Hangzhou Sartort Biopharma Co., Ltd

Appearance:Off-White to Light Yellow powder Storage:Sealed in dry,2-8°C Package:25kg/drum Application:chemicals Transportation:Express/Sea/Air Port:any port in china

Levofloxacin cyclized esterfactory price

Cas:106939-34-8

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Lab/Research institutions

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Hubei Langyou International Trading Co., Ltd

1. Guaranteed purity; 2. Large quantity in stock; 3. Largest manufacturer; 4. Best service after shipment with email; 5. High quality & competitive price; Appearance:white or off-white powder Storage:Store in sealed containers

Hot sale high quality&low price Levofloxacin Acid Ester,106939-34-8

Cas:106939-34-8

Min.Order:100 Gram

Negotiable

Type:Other

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Shanghai Upbio Tech Co.,Ltd

1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized

Ethyl (S)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylate 106939-34-8

Cas:106939-34-8

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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HANWAYS CHEMPHARM CO.,LIMITED

Hanways Chempharm Co., Limited, the former is Hubei Hanways Pharchem CO.,Limited, set up in 2009 in Wuhan, China. We specialize in sourcing and supplying APIs, pharmaceutical intermediates, and fine chemicals for worldwide markets. The founder has d

Pharmaceutical Raw Material Levofloxacin carboxylic acid

Cas:106939-34-8

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Trading Company

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LIDE PHARMACEUTICALS LIMITED

Advantage : LIDE PHARMACEUTICALS LTD. is a mid-small manufacturing-type enterprise, engaged in pharmaceutical intermediates of R&D, custom-made and production, and also involving trading chemicals for export. We have established the

Henan Wentao Chemical Product Co., Ltd.

Henan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod

CAS NO.:106939-34-8

Cas:106939-34-8

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Wuhan Zenuo Biological Medicine Technology Co Ltd

Product Name: Ethyl (S)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylate Synonyms: Ofloxacin Ethyl Ester;ethyl (S)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-[1,4] oxazino[2,3,4-ij]quinoline-6- ethyl car

Ofloxacin Ethyl Ester Manufactuered in China best quality

Cas:106939-34-8

Min.Order:100 Gram

Negotiable

Type:Lab/Research institutions

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Hangzhou Keyingchem Co.,Ltd

Hangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det

Levofloxacin acid ester

Cas:106939-34-8

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

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Afine Chemicals Limited

Company Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments

106939-34-8

Cas:106939-34-8

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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Hangzhou Lingrui Chemical Co.,Ltd.

Our advantages: 1, High quality with competitive price: 1) Standard:BP/USP/EP/Enterprise standard 2) All Purity≥99% 3) We are manufacturer and can provide high quality products with factory price. 2, Fast and safe delivery 1) Parcel can be

Levofloxacin Carboxylic Acid Ester

Cas:106939-34-8

Min.Order:1 Gram

Negotiable

Type:Other

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Siwei Development Group Ltd.

Product name: Levofloxacin Acid Ester CAS No.:106939-34-8 Molecule Formula:C15H13F2NO4 Molecule Weight:309.27 Purity: 99.0% Package: 25kg/drum Description:White or off-white powder Manufacture Standards:Enterprise Standard TESTIN

High Quality Levofloxacin Acid Ester in stock

Cas:106939-34-8

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Hangzhou Huarong Pharm Co., Ltd.

Huarong Industrial Group Limited established since 2006 , has been actively developing specialty products for Finished Dosages, APIs, Intermediates, and Fine chemicals markets in North America, Europe, Korea, Japan, Mid-East and all over the World.

Ethyl (S)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylate

Cas:106939-34-8

Min.Order:1 Gram

FOB Price: $1.0 / 2.0

Type:Trading Company

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Zibo Dorne chemical technology co. LTD

Product Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,

Ethyl (S)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylate

Cas:106939-34-8

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

EAST CHEMSOURCES LIMITED

factory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B

Levofloxacin acid ester

Cas:106939-34-8

Min.Order:1 Kilogram

FOB Price: $18.0 / 20.0

Type:Trading Company

inquiry

Shandong Mopai Biotechnology Co., LTD

Shandong Mopai Biotechnology Co., LTD is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemicals. W

Levofloxacin acid ester

Cas:106939-34-8

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

KAISA GROUP INC

1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer

Levofloxacin acid ester

Cas:106939-34-8

Min.Order:1 Metric Ton

FOB Price: $1.5

Type:Trading Company

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Hunan chemfish Pharmaceutical co.,Ltd

Appearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea

Levofloxacin cyclized ester

Cas:106939-34-8

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

HANGZHOU YUNUO CHEMICAL CO.,LTD

Superior quality Appearance:Off-White Pale Yellow Solid Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:1kg/bag, 1kg/drum or 25kg/drum or as per your request. Application:Levofloxacin intermediate Transportation:B

LEVOFLOXACINCYCLIZEDESTER

Cas:106939-34-8

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

inquiry

Win-Win chemical Co.Ltd

Stock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai

Bluecrystal chem-union

We are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp

Levofloxacin acid ester

Cas:106939-34-8

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Trading Company

inquiry

Wuhan Fortuna Chemical Co.,Ltd

Unique advantages Guaranteed purity High quality & competitive price Quality control Fast feedback Prompt shipment Application:Pharmaceutical intermediate Port:Any port of China

High quality Levofloxacin cyclized ester Cas 106939-34-8 with cheap price

Cas:106939-34-8

Min.Order:0 Metric Ton

Negotiable

Type:Trading Company

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Synthetic route

(S)-Alaninol
2749-11-3

(S)-Alaninol

ethyl acetate
141-78-6

ethyl acetate

2,3,4,5-tetrafluorobenzoyl chloride
94695-48-4

2,3,4,5-tetrafluorobenzoyl chloride

formic acid ethyl ester
109-94-4

formic acid ethyl ester

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

Conditions
ConditionsYield
Stage #1: ethyl acetate; formic acid ethyl ester With sodium hydride In toluene
Stage #2: (S)-Alaninol; 2,3,4,5-tetrafluorobenzoyl chloride In toluene at 20℃; Reflux;
Stage #3: With potassium fluoride In N,N-dimethyl-formamide Reflux;
99.4%
(-)-ethyl 9,10-difluoro-2,3-dihydro-3-iodomethyl-7-oxo-7H-pyrido<1,2,3-de><1,4>benzoxazine-6-carboxylate
113472-54-1

(-)-ethyl 9,10-difluoro-2,3-dihydro-3-iodomethyl-7-oxo-7H-pyrido<1,2,3-de><1,4>benzoxazine-6-carboxylate

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

Conditions
ConditionsYield
With tri-n-butyl-tin hydride In ethanol at 50 - 60℃; for 1h;73%
(S)-7,8-difluoro-3,4-dihydro-3-methyl-2H-1,4-benzoxazine
106939-42-8

(S)-7,8-difluoro-3,4-dihydro-3-methyl-2H-1,4-benzoxazine

diethyl 2-ethoxymethylenemalonate
87-13-8

diethyl 2-ethoxymethylenemalonate

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

Conditions
ConditionsYield
With ethyl phosphate In diethyl ether70%
With sodium chloride; sulfuric acid; sodium hydrogencarbonate; potassium carbonate In ice-water; diethyl ether; acetic anhydride
(+/-)-9,10-difluoro-3-hydroxymethyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylic acid ethyl ester
91040-39-0

(+/-)-9,10-difluoro-3-hydroxymethyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylic acid ethyl ester

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: 75 percent / pyridine / tetrahydrofuran / 1.5 h / Heating
3: 91 percent / satd. NaHCO3 / ethanol / 2 h / 50 - 60 °C
4: 93 percent / triphenylphosphite methiodide / dimethylformamide / 1.5 h / Ambient temperature
5: 73 percent / tri-n-butyltin hydride / ethanol / 1 h / 50 - 60 °C
View Scheme
(-)-ethyl 9,10-difluoro-2,3-dihydro-3-hydroxymethyl-7-oxo-7H-pyrido<1,2,3-de><1,4>benzoxazine-6-carboxylate
100986-87-6

(-)-ethyl 9,10-difluoro-2,3-dihydro-3-hydroxymethyl-7-oxo-7H-pyrido<1,2,3-de><1,4>benzoxazine-6-carboxylate

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 93 percent / triphenylphosphite methiodide / dimethylformamide / 1.5 h / Ambient temperature
2: 73 percent / tri-n-butyltin hydride / ethanol / 1 h / 50 - 60 °C
View Scheme
(+/-)-ethyl 9,10-difluoro-2,3-dihydro-3-(3,5-dinitrobenzoyloxy)methyl-7-oxo-7H-pyrido<1,2,3-de><1,4>benzoxazine-6-carboxylate
100986-91-2

(+/-)-ethyl 9,10-difluoro-2,3-dihydro-3-(3,5-dinitrobenzoyloxy)methyl-7-oxo-7H-pyrido<1,2,3-de><1,4>benzoxazine-6-carboxylate

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

Conditions
ConditionsYield
Multi-step reaction with 4 steps
2: 91 percent / satd. NaHCO3 / ethanol / 2 h / 50 - 60 °C
3: 93 percent / triphenylphosphite methiodide / dimethylformamide / 1.5 h / Ambient temperature
4: 73 percent / tri-n-butyltin hydride / ethanol / 1 h / 50 - 60 °C
View Scheme
(S)-3-(3,5-Dinitro-benzoyloxymethyl)-8,9-difluoro-6-oxo-2,3-dihydro-6H-1-oxa-3a-aza-phenalene-5-carboxylic acid ethyl ester
106939-31-5

(S)-3-(3,5-Dinitro-benzoyloxymethyl)-8,9-difluoro-6-oxo-2,3-dihydro-6H-1-oxa-3a-aza-phenalene-5-carboxylic acid ethyl ester

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 91 percent / satd. NaHCO3 / ethanol / 2 h / 50 - 60 °C
2: 93 percent / triphenylphosphite methiodide / dimethylformamide / 1.5 h / Ambient temperature
3: 73 percent / tri-n-butyltin hydride / ethanol / 1 h / 50 - 60 °C
View Scheme
(+)-ethyl 2-<<<(S)-1-hydroxyprop-2-yl>amino>methylene>-3-oxo-3-(2,3,4,5-tetrafluorophenyl)propionate
110548-02-2

(+)-ethyl 2-<<<(S)-1-hydroxyprop-2-yl>amino>methylene>-3-oxo-3-(2,3,4,5-tetrafluorophenyl)propionate

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide at 120℃;
(+)-ethyl 3-[(1-hydroxyprop-2(S)-yl)amino]acrylate

(+)-ethyl 3-[(1-hydroxyprop-2(S)-yl)amino]acrylate

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: ammonia / toluene / 4 h / 50 °C
2: toluene / 50 - 100 °C / pH < 7
3: hydrogenchloride / toluene; water / pH < 7
4: potassium fluoride / N,N-dimethyl-formamide / Reflux
View Scheme
ethyl 3-(dimethylamino)acrylate
924-99-2, 1117-37-9, 114894-59-6

ethyl 3-(dimethylamino)acrylate

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: toluene / 8 h / 20 °C
2: ammonia / toluene / 4 h / 50 °C
3: toluene / 50 - 100 °C / pH < 7
4: hydrogenchloride / toluene; water / pH < 7
5: potassium fluoride / N,N-dimethyl-formamide / Reflux
View Scheme
Multi-step reaction with 3 steps
1: triethylamine / toluene / 3 h / 40 °C / Green chemistry
2: 1 h / 40 - 90 °C / Green chemistry
3: potassium carbonate / N,N-dimethyl-formamide / 4 h / 100 °C / Green chemistry
View Scheme
Multi-step reaction with 3 steps
1: triethylamine / toluene / 6 h / 60 °C
2: toluene / 2 h / 60 - 90 °C
3: potassium carbonate / N,N-dimethyl-formamide / 8 h / 150 °C
View Scheme
C14H31NO3Si2

C14H31NO3Si2

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: toluene / 50 - 100 °C / pH < 7
2: hydrogenchloride / toluene; water / pH < 7
3: potassium fluoride / N,N-dimethyl-formamide / Reflux
View Scheme
3-(2-hydroxy-1-methylethylamino)-2-(2,3,4,5-tetrafluorobenzoyl)acrylic acid ethyl ester

3-(2-hydroxy-1-methylethylamino)-2-(2,3,4,5-tetrafluorobenzoyl)acrylic acid ethyl ester

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

Conditions
ConditionsYield
With potassium fluoride In N,N-dimethyl-formamide Reflux;
With potassium carbonate In N,N-dimethyl-formamide at 100℃; for 4h; Temperature; Green chemistry;
With potassium carbonate In N,N-dimethyl-formamide at 150℃; for 8h; Temperature;
2,3,4,5-tetrafluorobenzoyl chloride
94695-48-4

2,3,4,5-tetrafluorobenzoyl chloride

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: triethylamine / toluene / 3 h / 40 °C / Green chemistry
2: 1 h / 40 - 90 °C / Green chemistry
3: potassium carbonate / N,N-dimethyl-formamide / 4 h / 100 °C / Green chemistry
View Scheme
Multi-step reaction with 3 steps
1: triethylamine / toluene / 6 h / 60 °C
2: toluene / 2 h / 60 - 90 °C
3: potassium carbonate / N,N-dimethyl-formamide / 8 h / 150 °C
View Scheme
Multi-step reaction with 3 steps
1: triethylamine / toluene / 6.42 h / 12 - 75 °C
2: 3 h / 20 - 45 °C
3: potassium fluoride / N,N-dimethyl-formamide / 4 h / 160 °C
View Scheme
Multi-step reaction with 3 steps
1: triethylamine / toluene / 3 h / 55 °C
2: 1 h / 40 - 90 °C
3: potassium carbonate / N,N-dimethyl-formamide / 4 h / 100 °C
View Scheme
Multi-step reaction with 3 steps
1: triethylamine; Phenyl acetate / toluene / 8 h / 5 - 55 °C
2: toluene / 5 °C
3: potassium carbonate; Phenyl acetate; potassium fluoride / N,N-dimethyl-formamide / 2 h / 140 °C
View Scheme
ethyl α<(N,N-dimethylamino)methylene>-2,3,4,5-tetrafluoro-β-oxobenzenepropanoate
138998-47-7

ethyl α<(N,N-dimethylamino)methylene>-2,3,4,5-tetrafluoro-β-oxobenzenepropanoate

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 1 h / 40 - 90 °C / Green chemistry
2: potassium carbonate / N,N-dimethyl-formamide / 4 h / 100 °C / Green chemistry
View Scheme
Multi-step reaction with 2 steps
1: toluene / 2 h / 60 - 90 °C
2: potassium carbonate / N,N-dimethyl-formamide / 8 h / 150 °C
View Scheme
Multi-step reaction with 2 steps
1: 1 h / 40 - 90 °C
2: potassium carbonate / N,N-dimethyl-formamide / 4 h / 100 °C
View Scheme
Multi-step reaction with 2 steps
1: toluene / 5 °C
2: potassium carbonate; Phenyl acetate; potassium fluoride / N,N-dimethyl-formamide / 2 h / 140 °C
View Scheme
ethyl 3-(2,3,4,5-tetrafkuorophenyl)-3-oxopropanoate
94695-50-8

ethyl 3-(2,3,4,5-tetrafkuorophenyl)-3-oxopropanoate

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: 0.5 h / 140 °C
1.2: 40 h / 140 °C
1.3: 96 h / 20 °C
2.1: potassium carbonate / N,N-dimethyl acetamide / 0.42 h / 160 °C / Microwave irradiation
View Scheme
(-)-ethyl 2-<<<(R)-1-hydroxyprop-2-yl>amino>methylene>-3-oxo-3-(2,3,4,5-tetrafluorophenyl)propionate
110548-04-4

(-)-ethyl 2-<<<(R)-1-hydroxyprop-2-yl>amino>methylene>-3-oxo-3-(2,3,4,5-tetrafluorophenyl)propionate

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl acetamide at 160℃; for 0.416667h; Microwave irradiation;
boric acid
11113-50-1

boric acid

acetic anhydride
108-24-7

acetic anhydride

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

bis(acetato-O)[(3S)-9,10-difluoro-2,3-dihydro-3-methyl-7-dihydro-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylato-O6,O7]boron

bis(acetato-O)[(3S)-9,10-difluoro-2,3-dihydro-3-methyl-7-dihydro-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylato-O6,O7]boron

Conditions
ConditionsYield
Stage #1: boric acid; acetic anhydride With zinc(II) chloride at 20℃; for 0.5h; Large scale;
Stage #2: ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate at 60℃; for 2h; Large scale;
94%
Stage #1: boric acid; acetic anhydride With zinc(II) chloride at 20℃; for 0.5h;
Stage #2: ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate at 60℃; for 2h;
88%
Stage #1: boric acid; acetic anhydride With zinc(II) chloride at 20℃; for 0.5h;
Stage #2: ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate at 60℃; for 6h;
83%
acetic anhydride
108-24-7

acetic anhydride

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

bis(acetato-O)[(3S)-9,10-difluoro-2,3-dihydro-3-methyl-7-dihydro-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylato-O6,O7]boron

bis(acetato-O)[(3S)-9,10-difluoro-2,3-dihydro-3-methyl-7-dihydro-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylato-O6,O7]boron

Conditions
ConditionsYield
With boric acid; zinc(II) chloride93%
ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

(-)-(S)-3-methyl-9,10-difluoro-2,3-dihydro-8-nitro-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid ethyl ester

(-)-(S)-3-methyl-9,10-difluoro-2,3-dihydro-8-nitro-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid ethyl ester

Conditions
ConditionsYield
With sulfuric acid; potassium nitrate at 0 - 25℃; for 2h; Reagent/catalyst;93%
ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

levofloxacin Q-acid
100986-89-8

levofloxacin Q-acid

Conditions
ConditionsYield
With hydrogenchloride; acetic acid91%
In hydrogenchloride; acetic acid for 0.666667h; Heating;61%
With hydrogenchloride; acetic acid
nitromethane
75-52-5

nitromethane

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

(S)-9-fluoro-3-methyl-10-nitromethyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid ethyl ester

(S)-9-fluoro-3-methyl-10-nitromethyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid ethyl ester

Conditions
ConditionsYield
With sodium hydride In dimethyl sulfoxide at 50℃; for 4h;89%
Stage #1: nitromethane With sodium hydride In dimethyl sulfoxide
Stage #2: ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate In dimethyl sulfoxide at 65℃; for 4h; Further stages.;
89%
1-methyl-piperazine
109-01-3

1-methyl-piperazine

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

levofloxacin
100986-85-4

levofloxacin

Conditions
ConditionsYield
With acetic acid In water; N,N-dimethyl-formamide at 70 - 105℃; for 10h; Temperature; Solvent; Reagent/catalyst;85.7%
sodium cyanide
773837-37-9

sodium cyanide

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

(S)-9-fluoro-10-cyano-3-methyl-2,3-dihydro-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid ethyl ester

(S)-9-fluoro-10-cyano-3-methyl-2,3-dihydro-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid ethyl ester

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 80℃; for 10h; Solvent; Temperature;60.8%
In N,N-dimethyl-formamide at 0 - 80℃; for 10.5h; Temperature;60.8%
ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

(S)-9-fluoro-3-methyl-10-formyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid ethyl ester
853336-60-4

(S)-9-fluoro-3-methyl-10-formyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid ethyl ester

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: 89 percent / NaH / dimethylsulfoxide / 4 h / 50 °C
2.1: KOH / methanol / 0.5 h / -10 - 5 °C
2.2: 66 percent / KMnO4; MgSO4 / H2O
View Scheme
ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

(R)-9-(4-{4-[(S)-5-(Acetylamino-methyl)-2-oxo-oxazolidin-3-yl]-2-fluoro-phenyl}-piperazin-1-yl)-8-fluoro-3-methyl-6-oxo-2,3-dihydro-6H-1-oxa-3a-aza-phenalene-5-carboxylic acid

(R)-9-(4-{4-[(S)-5-(Acetylamino-methyl)-2-oxo-oxazolidin-3-yl]-2-fluoro-phenyl}-piperazin-1-yl)-8-fluoro-3-methyl-6-oxo-2,3-dihydro-6H-1-oxa-3a-aza-phenalene-5-carboxylic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: aq. HCl; AcOH
2: N-methylmorpoline / dimethylsulfoxide / 110 °C
View Scheme
ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

(S)-9-fluoro-3-methyl-7-oxo-10-((1r,4s)-4-(phenoxymethyl)cyclohexanecarboxamido)-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

(S)-9-fluoro-3-methyl-7-oxo-10-((1r,4s)-4-(phenoxymethyl)cyclohexanecarboxamido)-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: sodium azide / N,N-dimethyl-formamide / 8 h / 90 - 95 °C
2: 5%-palladium/activated carbon; hydrogen / N,N-dimethyl-formamide / 70 °C
3: dmap; pyridine / toluene / 90 °C / Inert atmosphere
4: sodium hydroxide; water / ethanol / 10 °C
View Scheme
ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

(S)-10-((1r,4s)-4-((2,6-dimethylphenoxy)methyl)cyclohexanecarboxamido)-9-fluoro-3-methyl-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

(S)-10-((1r,4s)-4-((2,6-dimethylphenoxy)methyl)cyclohexanecarboxamido)-9-fluoro-3-methyl-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: sodium azide / N,N-dimethyl-formamide / 8 h / 90 - 95 °C
2: 5%-palladium/activated carbon; hydrogen / N,N-dimethyl-formamide / 70 °C
3: dmap; pyridine / toluene / 90 °C / Inert atmosphere
4: sodium hydroxide; water / ethanol / 10 °C
View Scheme
ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

(S)-10-((1r,4s)-4-((2,3-difluorophenoxy)methyl)cyclohexanecarboxamido)-9-fluoro-3-methyl-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

(S)-10-((1r,4s)-4-((2,3-difluorophenoxy)methyl)cyclohexanecarboxamido)-9-fluoro-3-methyl-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: sodium azide / N,N-dimethyl-formamide / 8 h / 90 - 95 °C
2: 5%-palladium/activated carbon; hydrogen / N,N-dimethyl-formamide / 70 °C
3: dmap; pyridine / toluene / 90 °C / Inert atmosphere
4: sodium hydroxide; water / ethanol / 10 °C
View Scheme
ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

(S)-9-fluoro-3-methyl-10-((1r,4s)-4-((4-nitrophenoxy)methyl)cyclohexanecarboxamido)-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

(S)-9-fluoro-3-methyl-10-((1r,4s)-4-((4-nitrophenoxy)methyl)cyclohexanecarboxamido)-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: sodium azide / N,N-dimethyl-formamide / 8 h / 90 - 95 °C
2: 5%-palladium/activated carbon; hydrogen / N,N-dimethyl-formamide / 70 °C
3: dmap; pyridine / toluene / 90 °C / Inert atmosphere
4: sodium hydroxide; water / ethanol / 10 °C
View Scheme
ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

(S)-9-fluoro-3-methyl-7-oxo-10-((1s,4r)-4-(phenoxymethyl)cyclohexanecarboxamido)-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

(S)-9-fluoro-3-methyl-7-oxo-10-((1s,4r)-4-(phenoxymethyl)cyclohexanecarboxamido)-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: sodium azide / N,N-dimethyl-formamide / 8 h / 90 - 95 °C
2: 5%-palladium/activated carbon; hydrogen / N,N-dimethyl-formamide / 70 °C
3: dmap; pyridine / toluene / 90 °C / Inert atmosphere
4: sodium hydroxide; water / ethanol / 10 °C
View Scheme
ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

(S)-10-((1s,4r)-4-((2,6-dimethylphenoxy)methyl)cyclohexanecarboxamido)-9-fluoro-3-methyl-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

(S)-10-((1s,4r)-4-((2,6-dimethylphenoxy)methyl)cyclohexanecarboxamido)-9-fluoro-3-methyl-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: sodium azide / N,N-dimethyl-formamide / 8 h / 90 - 95 °C
2: 5%-palladium/activated carbon; hydrogen / N,N-dimethyl-formamide / 70 °C
3: dmap; pyridine / toluene / 90 °C / Inert atmosphere
4: sodium hydroxide; water / ethanol / 10 °C
View Scheme
ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

(S)-10-((1s,4r)-4-((2,3-difluorophenoxy)methyl)cyclohexanecarboxamido)-9-fluoro-3-methyl-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

(S)-10-((1s,4r)-4-((2,3-difluorophenoxy)methyl)cyclohexanecarboxamido)-9-fluoro-3-methyl-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: sodium azide / N,N-dimethyl-formamide / 8 h / 90 - 95 °C
2: 5%-palladium/activated carbon; hydrogen / N,N-dimethyl-formamide / 70 °C
3: dmap; pyridine / toluene / 90 °C / Inert atmosphere
4: sodium hydroxide; water / ethanol / 10 °C
View Scheme
ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

(S)-9-fluoro-3-methyl-10-((1s,4r)-4-((4-nitrophenoxy)methyl)cyclohexanecarboxamido)-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

(S)-9-fluoro-3-methyl-10-((1s,4r)-4-((4-nitrophenoxy)methyl)cyclohexanecarboxamido)-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: sodium azide / N,N-dimethyl-formamide / 8 h / 90 - 95 °C
2: 5%-palladium/activated carbon; hydrogen / N,N-dimethyl-formamide / 70 °C
3: dmap; pyridine / toluene / 90 °C / Inert atmosphere
4: sodium hydroxide; water / ethanol / 10 °C
View Scheme
ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

ethyl (S)-10-azido-9-fluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylate

ethyl (S)-10-azido-9-fluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylate

Conditions
ConditionsYield
With sodium azide In N,N-dimethyl-formamide at 90 - 95℃; for 8h;11.8 g
ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

C29H31FN2O6

C29H31FN2O6

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: sodium azide / N,N-dimethyl-formamide / 8 h / 90 - 95 °C
2: 5%-palladium/activated carbon; hydrogen / N,N-dimethyl-formamide / 70 °C
3: dmap; pyridine / toluene / 90 °C / Inert atmosphere
View Scheme
ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

C31H35FN2O6

C31H35FN2O6

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: sodium azide / N,N-dimethyl-formamide / 8 h / 90 - 95 °C
2: 5%-palladium/activated carbon; hydrogen / N,N-dimethyl-formamide / 70 °C
3: dmap; pyridine / toluene / 90 °C / Inert atmosphere
View Scheme
ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

C29H29F3N2O6

C29H29F3N2O6

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: sodium azide / N,N-dimethyl-formamide / 8 h / 90 - 95 °C
2: 5%-palladium/activated carbon; hydrogen / N,N-dimethyl-formamide / 70 °C
3: dmap; pyridine / toluene / 90 °C / Inert atmosphere
View Scheme
ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate
106939-34-8

ethyl (S)-(-)-9,10-Difluoro-3-Methyl-7-Oxo-2,3-Dihydro-7H-Pyrido[1,2,3-de]-[1,4]Benzoxazine-6-Carboxylate

C29H30FN3O8

C29H30FN3O8

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: sodium azide / N,N-dimethyl-formamide / 8 h / 90 - 95 °C
2: 5%-palladium/activated carbon; hydrogen / N,N-dimethyl-formamide / 70 °C
3: dmap; pyridine / toluene / 90 °C / Inert atmosphere
View Scheme

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